Structure of Atom questions
799 published questions with worked solutions.
- The maximum number of electrons possible in a sublevel is equal to:
- Possible values of l for a given value of n are:
- An element contains:
- The quantum number sufficient to describe the electron in the H atom is:
- How many electrons with l=2 are there in an atom having atomic number 23?
- In which orbital is the electron most tightly bound to the nucleus?
- The nitrogen atom has 7 electrons; the nitride ion (N^ 3- ) will have:
- The last electron placed in the third (n=3) quantum shell for:
- Nitrogen has the electronic configuration 1s^2,2s^2,2p_x^1,2p_y^1,2p_z^1 and not 1s^2,2s^2,2p_x^2,2p_y^1,2p_z^0. It was proposed...
- Three electrons in a p-sublevel must have the quantum number:
- If n=6, the correct sequence for filling of electrons will be:
- Binding energy of a hydrogen atom is 13.6 eV. The binding energy of a singly ionised helium atom is:
- The radii of two of the first four Bohr orbits of the hydrogen atom are in the ratio 1:4. The energy difference between them may...
- In Bohr's model of the hydrogen atom, the ratio between the period of revolution of an electron in the orbit n=1 to the period of...
- The Bohr's energy equation for the H atom reveals that the energy level of a shell is given by E=-13.58/n^2 eV . The smallest...
- For azimuthal quantum number l=3, the maximum number of electrons will be:
- The radius of the second stationary orbit in Bohr's atom is R. The radius of the third orbit will be:
- Given the mass of an electron is 9.11 10^ -31 kg and Planck's constant is 6.626 10^ -34 J s , the uncertainty involved in the...
- Number of unpaired electrons in the electronic configuration 1s^2,2s^22p^4:
- The electronic configuration of an atom is 1s^2,2s^22p^3. The number of unpaired electrons in this atom is:
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